拉曼放大对长跨距有线电视网中QAM信号的影响  

Influence to QAM of CATV in Long Distance Using Raman Amplifier

作　　者：高长亮[1] 蒋志立[1] 王春华[1] 

机构地区：[1]上海大学通信与信息工程学院,上海200072

出　　处：《信息安全与通信保密》2008年第11期70-71,74,共3页Information Security and Communications Privacy

摘　　要：论文研究了在目前的数字CATV网络中使用光纤拉曼放大器改善QAM数字信号的性能,重点分析了数字CATV网络中数字频道和模拟频道的相互影响。分析结果表明:模拟频道的非线性失真指标CSO/CTB对QAM信号的误码率将产生重要影响,从而可以通过采用拉曼放大来改善系统非线性失真指标,进而改善系统的误码率性能。Performance improvement of 64-QAM transmission in long distance digital cable television(CATV) network using Raman amplifier is presented.The mutual influence of analog channel and digital channel in digital CATV network is emphasized.It indicates that the non-linear distortion of analog channel will influence the bit error rate of QAM seriously, such as CSO, CTB and so on.And the bit error rate will be improved by applying Raman amplifier.

关 键 词：组合二阶失真 误码率 QAM调制 拉曼放大 自相位调制 

分 类 号：TN943.6[电子电信—信号与信息处理]